Self-aligning for a straight connection and thus enables accurate results. Two connectors for stable connection of two guide rails for long workpieces. Laser engraving for inserting the two connectors in the correct order. The two connectors ensure a straight and stable coupling of two guide rails. The self-aligning function makes joining quick and convenient. The connectors are compatible with all Festool guide rails. Enables precise cuts over the entire length of two or more connected guide rails.... Combination Allen key SW 5/SW 3